There are two, three, four and five factories in Yixing in history, but there is no factory. That was after the 1990s. In order to distinguish imported teapot manufacturers, the Zisha Craft Factory in Yixing, Jiangsu Province was called the "No.1 Factory". Jiangsu Yixing Zisha Craft Factory was formally established on 1958. It is a large collective enterprise, not a state-owned unit. In 1970s, Zhou Shu Commune in Yixing County founded Zisha Factory. In order to distinguish, we began to use the name of Zisha No.2 Factory, and then villages and towns appeared.